--- Look at the boy running on the ground. Is it Frank?
--- It ________ be him. I saw him go to the library just now.
| A．mustn’t | B．can’t |
| C．needn’t | D．might not |
We must do something important to stop the pollution ____ a happy life.
| A．live | B．to live |
| C．living | D．from living |
— We didn’t _____ the match.
— What a pity!
| A．lost | B．win | C．fail | D．beat |
I like talking with the girl ______ plays the piano _______.
| A．whom, wonderfully | B．that, wonderful |
| C．who, wonderfully | D．which, wonderful |
He tried to make himself ________ by his students, but he failed.
| A．understand | B．understood |
| C．understands | D．understanding |
--- I _____ read this book _____ I understand it.
--- You are great, I should learn from you.
| A．will; until | B．won’t ; until |
| C．shouldn’t that; | D．should ; that |